Garrison \Gar"ri*son\, v. t. [imp. & p. p. {Garrisoned}; p. pr. & vb. n. {Garrisoning}.] (Mil.) (a) To place troops in, as a fortification, for its defense; to furnish with soldiers; as, to garrison a fort or town. (b) To secure or defend by fortresses manned with troops; as, to garrison a conquered territory. [1913 Webster]